Tool for laying out stair stringers



FIG. 1 is a perspective view of a tool for laying out stair stringers, showing our new design;

FIG. 2 is a top plan view of FIG. 1;

FIG. 3 is a right edge view of FIG. 2;

FIG. 4 is a left edge view of FIG. 2;

FIG. 5 is a bottom plan view of FIG. 1;

FIG. 6 is a top edge view of FIG. 2; and,

FIG. 7 is a bottom edge view of FIG. 2.

The phantom lines shown do not form a part of the claimed design. 

The ornamental design for a tool for laying out stair stringers, as shown and described. 